[DeTomaso] Pantera cockpit ventilation

[Tomas Gunnarsson]

Yes, my main complaint is that if you have your heater set to comfortable (through the dash/defroster vents) with the fresh air "on", when you turn the fan off you're presented an air flow decided by vehicle speed of ambient air un-conditioned by the heater box. But to fix that you'd have to enclose the whole fan cages on both sides. :-)

Tomas
  ----- Original Message ----- 
  From: MikeLDrew at aol.com 
  To: guson at home.se 
  Cc: DeTomaso at poca.com 
  Sent: Wednesday, January 07, 2015 11:09 PM
  Subject: Re: [DeTomaso] Pantera cockpit ventilation



  In a message dated 1/7/15 2 05 52, guson at home.se writes:



    The fresh air intake dissapeared much earlier. My car was built in July 71 and does not have it. My Euro spare parts catalog lists 1st series (with fresh air) to car 1285, 2nd series (also with fresh air) from car 1286 and 3rd series (no fresh air) from car 1910. My car is #2004.


  >>>That sounds about right.  The Ford parts book doesn't show the first series at all; instead it lists the parts from 1286 to 1910 without the field fix (no fresh air), and that same setup with the field fix ('before 1910').  Then there's a drawing of the parts from 1910 on, with two different heater boxes shown.  One is for the early-style dash, and the other is for the later-style dash.  

  If you look at the subsequent listing of parts in the Ford parts book though, there are numerous part numbers for the associated systems which don't appear on any of the drawings!  The relevant general part number is 18552, and there are four parts under that heading.  It's all very confusing....

  > The original fresh air intake was only partway thought through. The air enters the pressurized heater box, that is on the pressure side of the heater fans. This means that when the car is stationary no fresh air enters the car. Actually, if you roll down a window the fan will blow air from the cabin out through the wiper grilles. The system Mike describes below ducts fresh air to one of the fan cages which makes it work kind of like on most modern cars. One drawback that I found with that system is that if you drive with the heater fan turned off, ambient air will blow through the fan housing to the drivers side footwell. This may or may not be pleasant depending on ambient air temperature.

  >>>However, you can close off air entering from the outside with this later system.  Moving the lever opens the 'box' to accept air only from inside the cabin of the car, which would make the heater much more effective in cold weather.  It would probably help A/C function as well, but in moderate temps it's probably preferable to get fresh air, just for the sake of getting fresh air....

  Mike
-------------- next part --------------
   Yes, my main complaint is that if you have your heater set to
   comfortable (through the dash/defroster vents) with the fresh air "on",
   when you turn the fan off you're presented an air flow decided by
   vehicle speed of ambient air un-conditioned by the heater box. But to
   fix that you'd have to enclose the whole fan cages on both sides. :-)



   Tomas

   ----- Original Message -----

   From: [1]MikeLDrew at aol.com

   To: [2]guson at home.se

   Cc: [3]DeTomaso at poca.com

   Sent: Wednesday, January 07, 2015 11:09 PM

   Subject: Re: [DeTomaso] Pantera cockpit ventilation

     In a message dated 1/7/15 2 05 52, [4]guson at home.se writes:
     The fresh air intake dissapeared much earlier. My car was built in
     July 71 and does not have it. My Euro spare parts catalog lists 1st
     series (with fresh air) to car 1285, 2nd series (also with fresh
     air) from car 1286 and 3rd series (no fresh air) from car 1910. My
     car is #2004.
     >>>That sounds about right.  The Ford parts book doesn't show the
     first series at all; instead it lists the parts from 1286 to 1910
     without the field fix (no fresh air), and that same setup with the
     field fix ('before 1910').  Then there's a drawing of the parts from
     1910 on, with two different heater boxes shown.  One is for the
     early-style dash, and the other is for the later-style dash.
     If you look at the subsequent listing of parts in the Ford parts
     book though, there are numerous part numbers for the associated
     systems which don't appear on any of the drawings!  The relevant
     general part number is 18552, and there are four parts under that
     heading.  It's all very confusing....
     > The original fresh air intake was only partway thought through.
     The air enters the pressurized heater box, that is on the pressure
     side of the heater fans. This means that when the car is stationary
     no fresh air enters the car. Actually, if you roll down a window the
     fan will blow air from the cabin out through the wiper grilles. The
     system Mike describes below ducts fresh air to one of the fan cages
     which makes it work kind of like on most modern cars. One drawback
     that I found with that system is that if you drive with the heater
     fan turned off, ambient air will blow through the fan housing to the
     drivers side footwell. This may or may not be pleasant depending on
     ambient air temperature.
     >>>However, you can close off air entering from the outside with
     this later system.  Moving the lever opens the 'box' to accept air
     only from inside the cabin of the car, which would make the heater
     much more effective in cold weather.  It would probably help A/C
     function as well, but in moderate temps it's probably preferable to
     get fresh air, just for the sake of getting fresh air....
     Mike

References

   1. mailto:MikeLDrew at aol.com
   2. mailto:guson at home.se
   3. mailto:DeTomaso at poca.com
   4. mailto:guson at home.se